According to the photocatalyst-based air purification module detachably attached to the side-type bulb-type light source of the ceiling-type electric lamp of the present invention, a light source unit having an external shape in the form of a bulb and emitting light of a designated wavelength (or wavelength band) using a power source, in a side direction A socket unit for inserting and supporting the light source unit and supplying power to the light source unit； a lampshade unit that induces light emitted through the light source unit inserted in the socket unit to diffuse into a specified range, and an upper portion of which is closed, and the socket unit In the air purifying module detachable from the light source part of the ceiling-type light fixture having a frame part having a structure fixed to the ceiling by being coupled to at least one of the lampshade parts, the circular cross-section of the bulb-shaped light source part inserted in the lateral direction of the socket part is minimum Designated geometric sphere attachable to the designated bulb area corresponding to the area between the diameter and the maximum diameter Coating the photocatalytic material assigned to the designated air contact area of the attachment structure portion and the area of the attachment structure portion which has the attachment area of the attachment area and maintains a state of attachment to the specified light bulb area of the bulb type light source part by the structural characteristics and frictional force of the attachment area A photocatalytic material portion formed by coating a designated photocatalytic material on a designated air contact region among regions of a contact structure portion formed to contact air with at least one side of the attachment structure portion or attached to a designated light bulb region of the light source portion The pressure for flowing air around the photocatalytic material unit by operating on the basis of the power generation unit th
